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<H1>Re: [MUD-Dev] World Persistence, flat files v/s DB v/s ??</H1>
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<LI><em>To</em>: <A HREF="mailto:mud-dev#null,net">mud-dev#null,net</A></LI>
<LI><em>Subject</em>: Re: [MUD-Dev] World Persistence, flat files v/s DB v/s ?? </LI>
<LI><em>From</em>: J C Lawrence <<A HREF="mailto:claw#under,engr.sgi.com">claw#under,engr.sgi.com</A>></LI>
<LI><em>Date</em>: Wed, 01 Apr 1998 13:49:13 -0800</LI>
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<PRE>
On Thu, 26 Mar 1998 01:55:50 PST8PDT
Chris Gray<cg#ami-cg,GraySage.Edmonton.AB.CA> wrote:
> In the area we started out discussing, that of attempting to run
> world-changing threads on the clients, that isn't good enough. You
> need to make the entire transaction that the code does atomic. There
> was an example about this a few months ago, involving two agents
> trying to go through a door. I don't remember the details, but one
> agent could block the second, but that second agent had two steps to
> its progress. The key is that the first step must not be allowed to
> update the DB unless the second step also completes, but the second
> step cannot complete if the first agent blocks the door. Simple
> transactions from the client to the server cannot handle this - the
> entire sequence of steps in running the action must be tentatively
> done, then committed or not, depending on things that may have
> happened in the mean time. I'm not explaining this well...
This is the "Dragon's Dinner" scenario posited by Demos which I just
posted.
--
J C Lawrence Internet: claw#null,net
(Contractor) Internet: coder#ibm,net
---------(*) Internet: claw#under,engr.sgi.com
...Honourary Member of Clan McFud -- Teamer's Avenging Monolith...
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<ul><li>Thread context:
<BLOCKQUOTE><UL>
<LI><STRONG>[MUD-Dev] Persistant storage.... My current idea.</STRONG>, <EM>(continued)</EM>
<ul compact>
<LI><strong><A NAME="00271" HREF="msg00271.html">[MUD-Dev] Persistant storage.... My current idea.</A></strong>,
J C Lawrence <a href="mailto:claw#under,engr.sgi.com">claw#under,engr.sgi.com</a>, Wed 22 Apr 1998, 23:26 GMT
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<LI><strong><A NAME="00004" HREF="msg00004.html">Re: [MUD-Dev] (fwd) Re: Roleplaying</A></strong>,
J C Lawrence <a href="mailto:claw#under,engr.sgi.com">claw#under,engr.sgi.com</a>, Wed 01 Apr 1998, 22:26 GMT
<LI><strong><A NAME="00002" HREF="msg00002.html">Re: [MUD-Dev] World Persistence, flat files v/s DB v/s ??</A></strong>,
J C Lawrence <a href="mailto:claw#under,engr.sgi.com">claw#under,engr.sgi.com</a>, Wed 01 Apr 1998, 19:41 GMT
<UL>
<li><Possible follow-up(s)><br>
<LI><strong><A NAME="00003" HREF="msg00003.html">Re: [MUD-Dev] World Persistence, flat files v/s DB v/s ??</A></strong>,
J C Lawrence <a href="mailto:claw#under,engr.sgi.com">claw#under,engr.sgi.com</a>, Wed 01 Apr 1998, 20:48 GMT
</LI>
<LI><strong><A NAME="00005" HREF="msg00005.html">Re: [MUD-Dev] World Persistence, flat files v/s DB v/s ??</A></strong>,
J C Lawrence <a href="mailto:claw#under,engr.sgi.com">claw#under,engr.sgi.com</a>, Wed 01 Apr 1998, 22:28 GMT
</LI>
<LI><strong><A NAME="00006" HREF="msg00006.html">Re: [MUD-Dev] World Persistence, flat files v/s DB v/s ??</A></strong>,
J C Lawrence <a href="mailto:claw#under,engr.sgi.com">claw#under,engr.sgi.com</a>, Wed 01 Apr 1998, 22:30 GMT
</LI>
</UL>
</LI>
<LI><strong><A NAME="00001" HREF="msg00001.html">Re: [MUD-Dev] META: Broken mail headers</A></strong>,
Chris Gray <a href="mailto:cg#ami-cg,GraySage.Edmonton.AB.CA">cg#ami-cg,GraySage.Edmonton.AB.CA</a>, Wed 01 Apr 1998, 15:49 GMT
<LI><strong><A NAME="00000" HREF="msg00000.html">Re: [MUD-Dev] Clients</A></strong>,
coder <a href="mailto:coder#ibm,net">coder#ibm,net</a>, Thu 12 Feb 1998, 02:19 GMT
</UL></BLOCKQUOTE>
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